Spraying device.



W. AHLEN.

SPRAYING DEVICE.

APPLICATION FILED MAR. 9, 1909.

961,195. Patented-June 14, 1910.

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APPLICATION FILED MAR.9, 1909.

Patented June 14, 1910.

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UiuinlD STATES PATENT @FFIQE.

WILLIAM AHLEN, OF DUQUESNE, PENNSYLVANIA.

SPRAYING DEVICE.

To all whom it may concern:

Be it known that I, WILLIAM AHLEN, of Duquesne, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Spraying Device, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a sectional plan on the line II of Fig. 2, showing my improved spraying apparatus applied for use in a gas washer or scrubber. Fig. 2 is a sectional side elevation of the same on the line IIII of Fig. 1.

My invention relates to apparatus for spraying water or other liquids in gas washers or scrubbers, cooling towers, and similar apparatus, and the invention more particularly relates to the construction and arrange-- ment of spraying apparatus used in supplying and distributing water or other liquid employed for removing finely divided solids which are carried in suspension in blast furnace gases or for cooling the gases. In this type of scrubbers or gas washers, it is important that the distribution of fluid, per unit of area of cross section, should be kept uniform over the entire cross section of the scrubber, in order to economize in the use of water. Should the distribution be uneven, the gas will be forced by the descending wa ter into vertical channels of least resistance, which are, of course, the parts having the least amount of water, and consequently, an insufficient amount of water for proper cleaning and cooling is brought into contact with the gases rising upwardly in the scrubber.

The object of my invention is to provide improved means for maintaining an even distribution of the water delivered by the spraying apparatus over the entire cross section of the apparatus independent of its head or pressure.

Another object of the invention is to provide means for preventing clogging of the water passages in the spraying apparatus.

A further object of the invention is to provide means by which the water may be caused to flow through these passages and not be delivered under a head.

In the drawings, 2 represents the top portion of a cylindrical gas washer or scrubber of any desired type, having a gas outlet 3 in Serial No. 482,278.

its top. The gas inlet is located in the bottom portion of the scrubber (not shown). Rotatably mounted in the top portion of the chamber 2 is a hollow rotatable shaft or pipe l; this shaft being secured in a suitable bearing 5, which is supported by the supports 6 from diametrically opposite points on the shell 2 of the scrubber. Secured to the flanged lower end 7 of the shaft or pipe 4 is an annular basin 8, the extension of the opening in the shaft 4 projecting downwardly into the basin portion 8 below its top or rim. Secured to the flanges on the basin 8 are the horizontally extending arms 9, 9, and 10, 10. Each of the arms 9 and 10 is provided with a plurality of separated passages through which fluid is delivered, the outer ends of the passages on the arms 9 being open. As shown the passages are open channels although these passages may be closed when desired.

The basin 8 is provided with a plurality of overflow outlet openings through which the fluid overflows into the passages of the arms 9 and 10.

Located in the chamber 2, below the horizontally extending rotatable arms 9 and 10 is a series of superimposed screens 11. The screens are carried upon suitable brackets 12, provided for that purpose, which are riveted or otherwise secured to the shell 2 of the scrubber chamber.

In the operation of my improved spraying apparatus, the water or other fluid is led into the apparatus through the hollow shaft or pipe 4 from any suitable source of supply, and on reaching the basin 8, overflows through the outlets 8 8 8, 8 8 and S in the rim of this basin into the series of passages provided in the horizontally extending rotatable arms 9 and 10. The widths of the outlets 8*, 8 8, 8 8 and 8 vary, these outlets progressively increasing in width as the troughs increase in length. The arms 9 and 10, through the shaft l, are positively rotated, preferably by means of a suitable motor (not shown). As the arms are rotated, the water overflowing into the several channels in the arm finally reaches the end of the arms and overflows in a pluralit-y of separated streams in a series of annular paths.

The flow of the water and the speed of washer by centrifugal force. By causing the water to fall upon the screens, its direction of movement is arrested and deflected, and it is divided up into a large number of streams which drop vertically through the chamber in the form of rain.

The breaking up of the water into drops is of importance, as by this means a greater cooling eiiect is obtained and a much larger surface contact with the gases is secured.

In rotating the arms 9 and 10, the passages :t'arthest from the axial center pass over a much greater surface area than those located closer to the axial center. It is important to evenly distribute the water over the entire cross sectional area of the scrubber chamber so the openings leading from the basin 8 into the passages, whose mouth is farthest from the axial center, are made larger so as to furnish a greater amount of water. As shown, the arms 9 are longer than the arms 10,the arms 9 supplying the water or other fluid to the larger portion of the chamber, while the arms 10 supply the portion of the chamber nearest the center thereof.

The advantages of my invention will be apparent to those skilled in the art. By means of the rotary arms, the water is evenly distributed within the scrubber chamber. The employment of open passages or troughs through which the water flows prevents clogging of the passages by small sticks, branches, leaves and other material which might be carried into the scrubber with the water. Proportioning the size of the water inlets relatively to the area of the annular path through which each passage rotates, equalizes the distribution of the water. By the combination of the rotary arms with the screens located below the arms, the water is caused to descend vertically in the chamber and the effect of centrifugal force, due to the rotating arms, is overcome.

Modifications in the construction and arrangement of the parts may be made without departing from my invention.

I claim:

1. Apparatus for spraying, comprising a rotary arm having a plurality of fluid-conducting passages and means for distributing the fluid passing therethrough as it enters said passages into streams oi varying volumes.

2. Apparatus for spraying, comprising a rotary arm having a series of open fluidconducting troughs from which the fluid is discharged, said trough having means arranged to vary the volumes of the entering streams of fluid discharged therefrom.

3. Apparatus for spraying comprising a plurality of radial rotary arms, said arms having separated fluid conducting channels therein and means on the arms arranged to vary the volume of entering streams of fluid flowing through the channels.

l. Apparatus for spraying, comprising a rotary spindle having a plurality of radial horizontally extending arms, means for rotating said spindle and arms, and means for supplying fluid to said arms in streams of varying volume, the arms being arranged to discharge fluid therefrom in a plurality of streams.

5. irpparatus for spraying, comprising a rotary arm having a plurality of separate fluidconducting channels, through which fluid is discharged, and means for supplying fluid simultaneously to said channels in varying volumes.

(3. Apparatus for spraying fluids, comprising a spraying chamber, a rotary arm having means in which the fluids are conducted into said chamber, said arm having means arranged to discharge the fluid in streams of varying volumes, and a screen be low said arm arranged to deflect and cause the fluid to descend vertically in said chamber.

7. Apparatus for spraying fluids comprising a spraying chamber, a rotary arm having means in which the fluid is conducted into said chamber, said arm having means arranged to divide fluid entering said arms into streams of varying volumes and a plurality of screens below said arm arranged to cause the fluid to descend vertically in said chamber.

8. In apparatus for spraying, the combination of means arranged to divide fluid entering the arms into a plurality of streams of varying volume and means arranged to receive and break up the streams of varying volumes into streams of uniform volume.

9. In apparatus for spraying, the combination of a rotary arm having a plurality of fluid conducted channels, and a screen arranged beneath said arm to receive and break up the streams of fluid delivered from said channels into streams of uniform volume.

In testimony whereof, I have hereunto set my hand.

WIL'IIIAM AHLEN.

\Vitnesses GEORGE L. Nnrr, T. E. MCDOWELL. 

